Messages in this thread Patch in this message |  | | From | Neil Armstrong <> | Subject | [PATCH 1/3] dt-bindings: mmc: meson-gx: add ddr-access-quirk property | Date | Mon, 13 May 2019 11:15:46 +0200 |
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On the Amlogic G12A SoC family, (only) the SDIO controller has a bug which makes any DDR access from the MMC controller fail.
Add the amlogic,ddr-access-quirk property so signal this particular controller has this bug and needs a quirk to work properly.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> --- Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt b/Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt index 13e70409e8ac..f8914dab06c6 100644 --- a/Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt +++ b/Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt @@ -22,6 +22,10 @@ Required properties: clock rate requested by the MMC core. - resets : phandle of the internal reset line +Optional properties: +- amlogic,ddr-access-quirk: set when HW cannot access the DDR memory, like on + the G12A SDIO controller. + Example: sd_emmc_a: mmc@70000 { -- 2.21.0
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